PERIMETER PROTECTION SYSTEMS

摘要

A detection system comprising a plurality of taut wire panels (11) having vertical detection/sensor wires (12). The sensor wires (12) are tensioned to position trigger plates associated one or more of the wires. Trigger plate movement causes an actuating means to indicate a sensor wire (12) has been moved. In one embodiment, sensor wires and portions of the panel frame (14, 16, 22) have similar coefficients of thermal expansion to substantially eliminate environmental expansion effects that may result in false alarms. Linked sensor wires (12) on adjacent panels (11, 11') may signal movement of entire panels. Panels (11) are monitored by panel controllers reporting to sector controllers that report to a central command computer that automatically numbers sector and panel controllers at start-up. Bi-directional communication enables alarms and system faults to be precisely located.